Restoration of Brain Acid Soluble Protein 1 Inhibits Proliferation and Migration of Thyroid Cancer Cells  

作　　者：Run-Sheng Guo Yue YU Jun Chen Yue-Yu Chen Na Shen Ming Qiu 

机构地区：[1]Department of General Surgery, Changzheng Hospital, Second Military Medical University, Shanghai 201705, China [2]Department of General Surgery, Jiading Central Hospital, Shanghai 201822, China [3]Department of General Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China [4]Department-of Pathology, Jiading Central Hospital, Shanghai 201822, China [5]Department of Otorhinolaryngology, Zhongshan Hospital, Fudan University, Shanghai 200032, China

出　　处：《Chinese Medical Journal》2016年第12期1439-1446,共8页中华医学杂志（英文版）

摘　　要：Background： Brain acid soluble protein 1 （BASPI） is identified as a novel potential tumor suppressor in several cancers. However, its role in thyroid cancer has not been investigated yet. In the present study, the antitumor activities of BASP1 against the growth and migration of thyroid cancer cells were evaluated. Methods： BASP1 expression in thyroid cancer tissues and normal tissues were examined by immunohistochemical staining and the association between its expression and prognosis was analyzed, pcDNA-BASP 1 carrying full length of BASP1 cDNA was constructed to restore the expression of BASP1 in thyroid cancer cell lines （BHT- I 01 and KMH-2）. The cell proliferation in vitro and in vivo was evaluated by WST-1 assay and xenografl tumor models, respectively. Cell cycle distribution after transfection was analyzed using flow cytometry. Cell apoptosis after transfection was examined by annexin V/propidium iodide assay. The migration was examined using transwell assay. Results： BASP1 expression was abundant in normal tissues while it is significantly decreased in cancer tissues （P = 0.000）. pcDNA-BASP1 restored the expression of BASPI and significantly inhibited the growth of BHT-101 and KMH-2 cells as well as xenograft tumors in nude mice （P = 0.000）. pcDNA-BASPI induced G1 arrest and apoptosis in BHT-101 and KMH-2 cells. In addition, pcDNA-BASP1 significantly inhibited the cell migration. Conclusions： Downregulation of BASP1 expression may play a role in the tumorigenesis of thyroid cancer. Restoration of BASPI expression exerted extensive antitumor activities against growth and migration of thyroid cancer cells, which suggested that BASPI gene might act as a potential therapeutic agent for the treatment of thyroid cancer.Background： Brain acid soluble protein 1 （BASPI） is identified as a novel potential tumor suppressor in several cancers. However, its role in thyroid cancer has not been investigated yet. In the present study, the antitumor activities of BASP1 against the growth and migration of thyroid cancer cells were evaluated. Methods： BASP1 expression in thyroid cancer tissues and normal tissues were examined by immunohistochemical staining and the association between its expression and prognosis was analyzed, pcDNA-BASP 1 carrying full length of BASP1 cDNA was constructed to restore the expression of BASP1 in thyroid cancer cell lines （BHT- I 01 and KMH-2）. The cell proliferation in vitro and in vivo was evaluated by WST-1 assay and xenografl tumor models, respectively. Cell cycle distribution after transfection was analyzed using flow cytometry. Cell apoptosis after transfection was examined by annexin V/propidium iodide assay. The migration was examined using transwell assay. Results： BASP1 expression was abundant in normal tissues while it is significantly decreased in cancer tissues （P = 0.000）. pcDNA-BASP1 restored the expression of BASPI and significantly inhibited the growth of BHT-101 and KMH-2 cells as well as xenograft tumors in nude mice （P = 0.000）. pcDNA-BASPI induced G1 arrest and apoptosis in BHT-101 and KMH-2 cells. In addition, pcDNA-BASP1 significantly inhibited the cell migration. Conclusions： Downregulation of BASP1 expression may play a role in the tumorigenesis of thyroid cancer. Restoration of BASPI expression exerted extensive antitumor activities against growth and migration of thyroid cancer cells, which suggested that BASPI gene might act as a potential therapeutic agent for the treatment of thyroid cancer.

关 键 词：Brain Acid Soluble Protein 1 Gene Transfection PROLIFERATION Thyroid Cancer 

分 类 号：Q25[生物学—细胞生物学] X591[环境科学与工程—环境工程]